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Strut-and-Tie Model for Shear Strength of Reinforced Concrete Squat Shear Walls
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 Title & Authors
Strut-and-Tie Model for Shear Strength of Reinforced Concrete Squat Shear Walls
Mun, Ju-Hyun; Yang, Keun-Hyeok;
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 Abstract
The previous strut-and-tie models (STMs) to evaluate the shear strength of squat shear walls with aspect ratio less than 2.0 do not consider the axial load transfer of concrete strut and individual shear transfer contribution of horizontal and vertical shear reinforcing bars in the web. To overcome the limitation of the existing models, a simple STM was established based on the crack band theory of concrete fracture mechanics. The equivalent effective width of concrete strut having a stress relief strip was determined from the neutral axis depth and effective factor of concrete strength. The shear transfer mechanism of shear reinforcement at the extended crack band zone was calculated from an internally statically indeterminate truss system. The shear transfer capacity of concrete strut and shear reinforcement was then driven using the energy equilibrium in the stress relief strip and crack band zone. The shear strength predictions of squat shear walls evaluated from the current models are in better agreement with 150 test results than those determined from STMs proposed by Siao and Hwang et al. Furthermore, the proposed STM gives consistent agreement with the observed trend of the shear strength of shear walls against different parameters.
 Keywords
squat shear wall;shear strength;strut-and-tie model;truss action;shear reinforcement;crack band theory;
 Language
Korean
 Cited by
 References
1.
Park, R., and Paulay, T., "Reinforced Concrete Structures", Wiley Interscience Publication, New Jersey, USA, 1933, p.769.

2.
Siao, W. B., "Shear Strength of Short Reinforced Concrete Walls, Corbels, and Deep Beams", ACI Structural Journal, Vol.91, No.2, 1994, pp.123-132.

3.
Hwang, S. J., Fang, W. H., Lee, H. J., and Yu, H. W., "Analytical Model for Predicting Shear Strength of Squat Walls", Journal of Structural Engineering, ASCE, Vol.127, No.1, 2001, pp.43-50. crossref(new window)

4.
ACI Committee 318, "Building Code Requirements for Structural Concrete (ACI 318M-11) and Commentary", American Concrete Institute, Farmington Hills, MI, USA, 2011, p.503.

5.
Wood, S. L., "Shear Strength of Low-Rise Reinforced Concrete Walls, ACI Structural Journal, Vol.87, No.1, 1990, pp.99-107.

6.
Gulec, C. K., and Whittaker, A. S., "Empirical Equations for Peak Shear Strength of Low Aspect Ratio Reinforced Concrete Walls", ACI Structural Journal, Vol.108, No.1, 2011, pp.80-89.

7.
Yang, K. H., "Development of Performance-Based Design Guideline for High-density Concrete Walls", Technical Report (2nd year). Kyonggi University, 2013, p.115 (in Korean).

8.
Mun, J. H., "Flexure and Shear Design Approach of High-Weight Concrete Shear Walls", Ph.D. Thesis, Architectural Engineering, Kyonggi University, South Korea, 2014 (in Korean).

9.
Bazant, Z. P., and Planas, J., "Fracture and Size Effect in Concrete and Other Quasibrittle Materials", CRC, New York, 1998.

10.
Schafer, K., "Strut-and-Tie Models for the Design of Structural Concrete, Notes of Workshop", Department of Civil Engineering, National Cheng Kung University, Tainan, Taiwan, 1996.

11.
Zhang, L. X. B., and Hsu, T. T. C., "Behavior and Analysis of 100 MPa Concrete Member Membrane Elements," Journal of Structural Engineering, ASCE, Vol.124, No.1, 1998, pp.24-34. crossref(new window)

12.
Yang, K. H., and Ashour, A. F., "Strut-and-Tie Model Based on Crack Band Theory for Deep Beams", Journal of Structural Engineering, ASCE, Vol.137, No.10, 2011, pp.1030-1038. crossref(new window)

13.
CEP-FIP Model Code 1990, "Design of Concrete Structures", Comite Euro-International du Beton, Thomas Telford Services Ltd, London, 1993.

14.
Marti, P., "Basic Tools of Reinforced Concrete Beam Design", ACI Journal, Vol.82, No.1, 1985, pp.46-56.

15.
Mun, J. H., and Yang, K. H., "Plastic Hinge Lengths Model for Reinforced Concrete Slender Shear Walls", Magazine of Concrete Research, Accepted, 2014.

16.
Sim, J. I., Yang, K. H., Lee, E. T., and Yi, S. T., "Effect of Aggregate and Specimen Sizes on Lightweight Concrete Fracture Energy", Journal of Materials in Civil Engineering, ASCE, Vol.26, No.5, 2014, pp.845-854. crossref(new window)

17.
Hirosawa, M., "Past Experimental Results on Reinforced Concrete Shear Walls and Analysis on Them", Kenchiku Kenkyu Shiryo No. 6, Building Research Institute, Ministry of Construction, 1975 (in Japanese).

18.
Tan, K. H., Kong, F. K., Teng, S., and Weng, L. W., "Effect of Web Reinforcement on High-Strength Concrete Deep Beams", ACI Structural Journal, Vol.94, No.5, 1997, pp.572-582.

19.
Maier, J., "Shear Wall Tests", Concrete Shear in Earthquake, University of Houston, 1992.

20.
Lefas, L. D., Kotsovos, M. D., and Ambraseys, N. N., "Behavior of Reinforced Concrete Structural Walls: Strength, Deformation Characteristics and Failure Mechanism", ACI Structural Journal, Vol.87, No.1, 1990, pp.23-31.

21.
Bazant, Z. P., and Sun, H. H., "Size Effect in Diagonal Shear Failure: Influence of Aggregate Size and Stirrups", ACI Materials Journal, Vol.84, No.4, 1987, pp.259-272.

22.
Wallace, J. W., "Behavior and Design of High-Strength RC Walls", ACI Special Publication, Vol.176, 1998, pp.259-279.

23.
Wasiewicz, Z. F., "Sliding Shear in Low-Rise Shear Wall under Lateral Load Reversals", M.S. Thesis, Department of Civil Engineering, Ottawa University, Canada, 1988.

24.
Yun, H. D., "Seismic Resistance of High Strength Reinforced Concrete Structural Walls", Ph.D. Thesis, Architectural Engineering, Hanyang University, South Korea, 1994 (in Korean).